Show sum for all on/off-budget accounts

web/src/store/budget/index.ts

@@ -98,9 +98,15 @@ export const budgetStore : Module<BudgetState, any> = {
         OnBudgetAccounts(state) {
             return Array.from(state.Accounts.values()).filter(x => x.OnBudget);
         },
+        OnBudgetAccountsBalance(state, getters){
+            return getters.OnBudgetAccounts.reduce((prev, curr) => prev + Number(curr.Balance), 0);
+        },
         OffBudgetAccounts(state) {
             return Array.from(state.Accounts.values()).filter(x => !x.OnBudget);
         },
+        OffBudgetAccountsBalance(state, getters){
+            return getters.OffBudgetAccounts.reduce((prev, curr) => prev + Number(curr.Balance), 0);
+        },
         Transactions(state) {
             return (state.Transactions || []);
         }